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Vadim26 [7]
3 years ago
12

Bacterial cells that encounter conditions that are not favorable to survival will sometimes form a tough, protective shell conta

ining the nucleic acid and a small amount of cytoplasm. This shell can survive harsh conditions in a kind of dormancy that may last for months or years. What is the name given to this tough, protective shell?
Biology
2 answers:
Marrrta [24]3 years ago
3 0
I think compartment organelles???
Zepler [3.9K]3 years ago
3 0

Answer:

The correct answer will be- Endospore.

Explanation:

Bacteria under unfavourable conditions form a tough protective shell called "endospores" to ensure the survival of bacteria during environmental stress conditions.

The endospores are the tough, dormant, and non-reproductive structure produced by the bacteria belonging to the family Firmicute. The endospores provide resistance to desiccation,  temperature, chemical disinfectants, starvation, lysozyme and ultraviolet and gamma radiation.

Thus, Endospore is the correct answer.

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A low area of land often forms between hills or mountains. This low area is
Maurinko [17]

Answer:

b

Explanation:

lava is hot and needs to flow

6 0
3 years ago
For a species with a haploid number of 15 chromosomes, how many different combinations of maternal and paternal chromosomes are
babymother [125]
The answer is:  " 32,768 " .
___________________________________________
Explanation:
__________________________________________________________
 →  2ⁿ  = ? ;  {that is: "2" , raised to the "n th" power, equals {<u>what value</u>} ?
___________________________________________
 → Note that "n" is the haploid number, which is: 
                           "15" (value given within this very question).
__________________________________________________
→ So we plug in "15" for "n" ; to obtain the "final value" —
                                                          which is the answer.
__________________________________________________
           →  As such:  " 2¹⁵ = 32,768 " .  (using scientific calculator online).
___________________________________________________
           →  The answer is:  " 32,768 " . 
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3 0
3 years ago
Jason’s team studied the________ , which measures incoming solar radiation and outgoing terrestrial infrared radiation.
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8 0
3 years ago
Read 2 more answers
How long ago are prokaryotes believed to have evolved on earth? a. 3.5 million years b. 1.5 billion years c. 2 billion years d.
Anni [7]

The correct answer is d. 3.5 billion years.

Prokaryotes were the first forms of life on Earth long before simple multicellular life appeared because of their ability to withstand extreme conditions. It is believed that the first living forms were bacteria combined with archaea in the microbial mat (multi-layered sheet).


4 0
3 years ago
Read 2 more answers
Hi!!!! Please help!! Desperately need biology help!
OLga [1]

Answer no 8:

The correct option is D) Antelopes with muscular legs are bale to outrun their predators better than antelopes with poor muscle tone. Thus they lived to reproduce.

Explanation:

Genetic variations in a population are the main reason that natural selection tends to occur. Natural selection favours those organisms which have better characteristics.The organisms with better traits are able to reproduce and pass on their characteristics to their offsprings.

Answer No 10:

The correct option is A) Phenotype directly influences the interaction of an organism with its environment.

Explanation:

The interactions between the phenotypic traits and the environment analyze whether a particular organism will be able to survive and pass on its characteristics to its offspring. Hence, the phenotype directly influences the interaction of an organism with its environment.

Answer No 9

The correct option is A) resistance to a virus

Explanation:

Mutations can be described as any changes which occur in the DNA of an organism. Mutations might be beneficial or harmful depending on the location where the mutation arises. Viruses are usually harmful for eukaryotes. Hence, the correct option is A.

Answer No 11:

The correct option is C) Giraffes with longer necks survived because they were better suited to the environment.

Explanation:

Natural selection tends to favour those organsims which are better suited to live in an environment. Those organisms with better characteristics are able to survive and pass on their traits to their offsprings.

The giraffes with longer necks were better adapted to live in the environment and hence were favoured by natural selection.

Answer No  12:

The correct option is D) selective breeding

Explanation:

Selective breeding can be described as a technique in which organisms with better characteristics are crossed, so that offsprings with better characteristics can be produced. Selective breeding is done by humans where as natural selection is done by the nature.

7 0
3 years ago
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